h series

H-Series Coatings for High Temperature Corrosion Resistance

HPC’s H-Series of coatings offer a unique binder system combined with ceramic encased aluminum particulates.  This allows the coating to be more active electrochemically than the metal substrates they are attached to.  This provides a self-sacrificing coating which, when damaged, will not allow the propagation or undercutting of corrosion. 

Our H-Series has proven to be highly effective in the prevention of heat scaling, oxidation, erosion/abrasion and saline corrosion.  Corrosion and thermal fatigue, which occur as a result of exposure to cyclical temperatures and chemical environments, can be drastically reduced. It can withstand temperatures of -375° F to +1300° F (-225° C to 700° C).

Unlike plating processes, our H-Series coatings have no potential of generating hydrogen embrittlement.  In terms of bond strength and abrasion resistance 10,000 PSI bond strengths are common. H-Series coatings can easily withstand hammer impacts without suffering any degradation to the coating, and also provide an adherent conductive coating for non-conductive substrates such as glass and ceramics.

H-Series coatings provide excellent heat retention on items such as exhaust manifolds and ducts, turbo housings, flame arresters and pipe. Inside diameters can be coated, thus enabling the coating to double its insulating properties, while eliminating thermal scale and oxidation build-up.  H-Series coatings are available in eight colors.

H-Series coatings are OEM specified by truck, auto, and motorcycle manufacturers and meet U.S. military specification MIL-C-81751B ceramic-metallic coatings.

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  • Superior corrosion protection.  Self-sacrificial quality will not allow corrosion to develop even when damaged.
  • Rapid cool-down.
  • Weldability.
  • Color availability.
  • Will not blue or stain.
  • Eliminates thermal fatigue and oxidation.
  • Excellent abrasion resistance.
  • Protection at temperatures of -375°F to + 1,300°F (225° C to 700° C).
  • Can be applied to both new and used components.


Thermal fatigue
Hot gas impingement combined with cyclical temperatures resulted in premature failure of this turbo outlet.

Questions?  Email HPC Technical Department

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